Evaporation fan applied to air conditioner of engineering vehicle

Abstract

The evaporation fan applied to the engineering vehicle air conditioner comprises a mounting bottom plate and a driving motor, an arc-shaped mounting base is arranged on the mounting bottom plate, an arc-shaped pressing plate is arranged above the arc-shaped mounting base, a motor mounting cavity is defined by the arc-shaped mounting base and the arc-shaped pressing plate, and the driving motor is arranged in the motor mounting cavity and fixed through bolts. Output shafts at the two ends of the driving motor are connected with impellers, the impellers at the two ends are consistent in size, the impellers are made of reinforced modified plastic materials, and each impeller comprises a wheel disc which is provided with a shaft sleeve; blades are arranged on the front side and the rear side of the periphery of the wheel disc, and the blades on the two sides are consistent in number and size. The impeller is made of reinforced modified plastics, so that the problem that the impeller is broken due to cold and hot alternation is solved; symmetrical or parallel design is adopted inside, so that the stability of the fan in the movement process is enhanced; the driving motor is fixed through bolts, and meanwhile, a rubber gasket is additionally arranged, so that fan failure caused by overlarge vibration quantity is prevented; and impeller joints are changed into shaft sleeve design, so that the strength of the joints is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners for engineering vehicles, in particular to an evaporating fan applied to the air conditioners of engineering vehicles. Background Art

[0002] In recent years, with the rapid development of infrastructure projects at home and abroad, the demand for construction vehicles has also increased year by year. However, with the increasing diversity of the environment in which construction projects are located, the requirements for the ability of construction vehicles to operate in harsh environments are also constantly increasing.

[0003] The car air conditioner is composed of a compressor, condenser, throttling element, evaporator, fan and necessary control components. It is an air conditioning system used to adjust the temperature and humidity in the car and provide a comfortable environment for the passengers.

[0004] Engineering vehicle air conditioners are a type of vehicle air conditioners used exclusively for engineering operations. Their stability is extremely important and directly affects the personal safety of operators. However, due to the large vibration during the use of engineering vehicles, if the engineering vehicle air conditioners are in a hot and cold alternating environment for a long time, the impellers of the internal evaporation fans are prone to breakage, which in turn causes the engineering vehicle air conditioners to lose their ability to regulate temperature, posing a hidden danger to the operator's operating safety.

[0005] Therefore, in view of the deficiencies in the prior art, the utility model designs an evaporating fan applied to an engineering vehicle air conditioner to solve the above problems.

[0006] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solution of the utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the utility model. Utility Model Content

[0007] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide an evaporative fan used in engineering vehicle air conditioning, the impeller is made of temperature-resistant materials, and the stability of the impeller movement is improved through symmetrical design and shock-absorbing design to avoid the impeller from breaking during use.

[0008] To achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: an evaporating fan used in an engineering vehicle air conditioner, comprising a mounting base and a driving motor, an arc-shaped mounting seat is provided on the mounting base, an arc-shaped pressure plate is provided above the arc-shaped mounting seat, the arc-shaped mounting seat and the arc-shaped pressure plate enclose a motor mounting cavity, the driving motor is arranged in the motor mounting cavity and fixed by bolts, the output shafts at both ends of the driving motor are connected with impellers, the sizes of the impellers at both ends are the same, the impellers are made of reinforced modified plastic, the impeller comprises a wheel disc, a shaft sleeve is provided on the wheel disc, the inner side of the shaft sleeve is connected to the outer periphery of the output shaft; blades are provided on both the front and rear sides of the outer periphery of the wheel disc, and the number and size of the blades on both sides are the same.

[0009] The preferred technical solution is: the reinforced modified plastic is specifically PA6GF30 material.

[0010] The preferred technical solution is: a protective shell is provided on the outside of the impeller to control the airflow direction of the fan while ensuring that the impeller is not damaged.

[0011] The preferred technical solution is: reinforcing ribs are provided on the outside of the shaft sleeve to improve the stability of the shaft sleeve connection.

[0012] The preferred technical solution is that the end of the blade away from the wheel disc is fixed by a connecting ring.

[0013] The preferred technical solution is: a rubber gasket is provided between the drive motor and the motor mounting cavity to reduce the impact of vibration on the drive motor and increase the friction of the connection surface.

[0014] The preferred technical solution is: a pressure relief hole is also provided on the wheel disc to balance the pressure difference on both sides of the wheel disc and increase the balance during movement.

[0015] Due to the application of the above-mentioned technical scheme, the evaporating fan used in the air conditioning of engineering vehicles provided by the utility model adopts reinforced modified plastic to make the impeller of the evaporating fan, thereby solving the cold and hot alternating fracture phenomenon of the impeller caused by material problems; the internal design of the evaporating fan adopts a symmetrical or parallel design to enhance the stability of the fan during movement; the driving motor is fixed with bolts to ensure the reliability of the connection, and at the same time, rubber gaskets are added to prevent the evaporating fan from failing due to excessive vibration; the impeller connection is changed from a traditional shaft hole to a shaft sleeve design, thereby increasing the strength of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the evaporation fan of the utility model applied to the air conditioner of an engineering vehicle;

[0017] Figure 2 This is an exploded view of the installation base plate in the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the impeller in the utility model.

[0020] In the above drawings, 1. mounting base plate; 11. arc-shaped mounting seat; 12. arc-shaped pressure plate; 13. bolts; 14. rubber gasket; 2. driving motor; 21. output shaft; 3. impeller; 31. wheel disc; 31a. shaft sleeve; 31b. reinforcing rib; 31c. pressure relief hole; 32. blade; 33. connecting ring; 4. protective shell. DETAILED DESCRIPTION

[0021] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1 As shown, the utility model discloses an evaporation fan applied to an engineering vehicle air conditioner, including a mounting base plate 1, a driving motor 2 and an impeller 3. The main components of the utility model are described in detail below:

[0025] like Figure 1 and Figure 2As shown, an arc-shaped mounting seat 11 is provided on the mounting base plate 1, and an arc-shaped pressure plate 12 is provided above the arc-shaped mounting seat 11. The arc-shaped mounting seat 11 and the arc-shaped pressure plate 12 enclose a motor mounting cavity. The driving motor 2 is fixed by the contoured cavity, which can increase the contact area of ​​the fixed end and improve the stability of the connection.

[0026] like Figure 2 and Figure 3 As shown, the drive motor 2 is arranged in the motor mounting cavity and fixed by bolts 13. A rubber gasket 14 is provided between the drive motor 2 and the motor mounting cavity to reduce the impact of the running vibration of the engineering vehicle on the drive motor 2, while increasing the friction between the outer periphery of the drive motor 2 and the inner wall of the motor mounting cavity to prevent the motor from sliding in the motor mounting cavity and improve the stability of the installation; output shafts 21 are provided at both ends of the drive motor 2 to increase the left-right balance of the drive motor 2 during operation.

[0027] like Figure 3 and Figure 4 As shown, there are two groups of impellers 3 with the same shape and size; the impeller 3 is made of reinforced modified plastic material of PA6GF30, and its structure includes a wheel disc 31, and a pressure relief hole 31c is also provided on the wheel disc 31, which is used to balance the air pressure on both sides of the wheel disc and reduce the axial thrust of the wheel disc; a shaft sleeve 31a is provided on the wheel disc 31, and the two groups of impellers 3 are respectively connected to the output shaft 21 at both ends of the driving motor 2 through the shaft sleeve 31a to ensure the stability of the connection; a reinforcing rib 31b is provided on the outside of the shaft sleeve 31a to improve the connection strength at the shaft sleeve 31a; blades 32 are provided on both the front and rear sides of the outer periphery of the wheel disc 31, and the number and size of the blades 32 on both sides are consistent, and the end of the blade 32 away from the wheel disc 31 is fixed by a connecting ring 33 to ensure the stability of the blade 32 during movement and avoid deformation; a protective shell 4 is provided on the outside of the impeller 3 to prevent debris from entering and damaging the blade 32 while regulating the airflow.

[0028] In summary, the evaporating fan for use in an engineering vehicle air conditioner disclosed in the utility model has the following advantages:

[0029] 1) The use of PA6GF30 as the material for the impeller not only ensures mechanical strength, but also improves the impeller's ability to resist hot and cold alternation, thus avoiding damage to the impeller in extreme environments and causing failure of the evaporator fan;

[0030] 2) The drive motor adopts a left-right dual-axis design, and the symmetrically arranged impellers increase the balance of movement, avoid continuous swinging of the drive motor and impeller in a vibrating environment, and improve operating stability;

[0031] 3) Use fastening bolts and rubber gaskets for reinforcement to reduce the impact of vibration on the drive motor.

[0032] The above embodiment provided by the utility model is only an example of the principle and effect of the utility model, and is not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiment without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. The evaporating fan used in engineering vehicle air conditioner is characterized by: The invention comprises a mounting base (1) and a driving motor (2), wherein an arc-shaped mounting seat (11) is provided on the mounting base (1), an arc-shaped pressing plate (12) is provided above the arc-shaped mounting seat (11), the arc-shaped mounting seat (11) and the arc-shaped pressing plate (12) enclose a motor mounting cavity, the driving motor (2) is arranged in the motor mounting cavity and is fixed by bolts (13), the output shafts (21) at both ends of the driving motor (2) are connected to impellers (3), the impellers (3) at both ends have the same size, the impellers (3) are made of reinforced modified plastic material, the impeller (3) comprises a wheel disc (31), the wheel disc (31) is provided with a shaft sleeve (31a), the inner side of the shaft sleeve (31a) is connected to the outer periphery of the output shaft (21); blades (32) are provided on both the front and rear sides of the outer periphery of the wheel disc (31), and the number and size of the blades (32) on both sides are the same.

2. The evaporating fan used in the air conditioner of an engineering vehicle according to claim 1, characterized in that: The reinforced modified plastic is specifically PA6GF30 material.

3. The evaporating fan used in the air conditioner of an engineering vehicle according to claim 1, characterized in that: A protective casing (4) is provided on the outer side of the impeller (3).

4. The evaporating fan used in the air conditioner of an engineering vehicle according to claim 1, characterized in that: The outer side of the shaft sleeve (31a) is provided with a reinforcing rib (31b).

5. The evaporating fan used in the air conditioner of an engineering vehicle according to claim 1, characterized in that: One end of the blade (32) away from the wheel disc (31) is fixed by a connecting ring (33).

6. The evaporating fan used in the air conditioner of an engineering vehicle according to claim 1, characterized in that: A rubber gasket (14) is provided between the drive motor (2) and the motor installation cavity.

7. The evaporating fan used in the air conditioner of an engineering vehicle according to claim 1, characterized in that: The wheel disc (31) is also provided with a pressure relief hole (31c).

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